Garland and Kelly (2006) point out that directional selection should support alleles that increase phenotypic plasticity in the direction of selection.
Social niche The selective context in which social behaviour occurs, affecting the strength and direction of selection on it.
Hunt et al. [ 6] suggest that when selective forces act in opposition, variation in the timing, strength and direction of selection can produce a range of possible outcomes.
Only this direction of selection was considered in the previous protocol.
However, when the direction of selection is fluctuating, evolutionary paths are much longer and genotype space is explored further.
Finally, efficient social organization may affect the direction of selection for the participants.
We calculated the average ΔTC of each brambling clutch in order to evaluate the direction of selection on hue.
However, the direction of selection on the interacting traits may provide useful clues as to the eventual fate of the community.
However, variation in warning signal expression is common, which suggests that the strength and direction of selection on signal size could vary spatially and temporally [24].
In order to evaluate the direction of selection on brambling egg phenotypes we calculated the average color contrast for each clutch based on pairings with real cuckoo eggs.
Although the diet width model accurately predicted the direction of selection, it had only a limited ability to predict the response to selection.
